Sheet-metal-heating furnace.



No. 699,533. Patented May 6,1902.

J. E. & B. JONES.

SHEET METAL HEATING FURNACE.

(Application filed June 24, 1901.) (No Model.) I -|0 heats-Sheet l.

m: noams VETERS cc. PuoTo-uwo, wAsnmuToN, 0. cv

, No. 699,533. Patented May 6, I902. JIE. & B. JONES.

SHEET METAL HEATING FURNACE.

(Applic-tion filed June 24. 1901.)

(No Model.) [0 Sheets-Sheet 2.

: Q Swim/016 JZ. Jar/266 1 WWW, 72/266 m: Norms vz-rzns co. worqmnouWASHINGTON, n cy Patented May 6, i902.

.1. E. &. B. 'JUNES. SHEET ME-TAL HEATING FURNACE.

(Application filed June 24, 1901.)

m: mums rsrsns co., PHuToLn'ua, wnsn'mmom o, c.

No. 699,533. Patented May 6, I902.

J. E. & B. JONES; SHEET METAL HEATING FURNACE.

(Application filed June 24, 1901.)

(I10 Model.) sets-Sheet 4,

2 N awe/WW M70066 0' 2- w'vbvwam i I V w: Noams PETER$ c0,FNOTQUTNOWkSHINCTON. n, c.

Patented May 6, I902.

J. E. 8. B. JONES. SHEET METAL HEATING FURNACE.

(Application filed. June 24, 1901.)

I0 Sheets-Sheet 5;

(No Model.)

5] wvowtozs No. 699,533. Patented May 6, I902. V

J. E. &. B. JONES.

SHEET METAL HEATING FURNACE.

(Applicatibn filed June 24, 1901.)

(No Model.) l0 Sheets-8heet 6.

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No. 699,533. Patented May 6, I902.

' J. E. & B. JONES.

SHEET METAL HEATING FURNACE.

(Application filed June 24, 1901.

(No Model.) In Sheets-Sheet 7..

No. 699,533. Patented May 5, |902.

I .1. E. & B. JOKES. SHEET METAL HEATING FURNACE.

(kppl-iction filed June- 24, 1901.

(No Model.) lp She'etP-Sheat 8.

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No. 99,533. Patented May 6, 1902.

' J. E. & B. JONES.

sneer METAL HEATING FURNACE.

, (Application filed. June 24 1901.) (No Model.) l0 Sheets-Sheet 9.

No. 699,533. Patented ma a, 1902.

J. E. & B. .mmzs.

SHEET METAL HEATING FURNACE.

(Application filed June 24, 1901. (No Model.) l0 sheds-sheet [0.

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U-NlTED STATES PATENT Orrrcn.

JOHN E. JONES AND BENJAMIN JONES, OF ELWOOD, INDIANA. V

SHEET -M ETAL-HEATING FURNACE.

SPECIFICATION forming im of Letters Patent No. 699,533, dated May 6,1902.

' Application filed June 24 1901. Serial No. 65,837. (No model.)

enable. others skilled in the art to which it appertains to make and usethe same.

The invention relatesto a sheet-metal-heat- 1 ing furnace forrolling-mills designed forpreparing sheet metals, such as sheet-iron ortinplate, for rolling.

The object of the invention is to provide a I heater of this characterwhich shall be simple of construction, durable in use, comparativelyinexpensive of production, efticient in operation, and one in which thetemperature of the sheet metal will be gradually raised to the properdegree and the packs of sheet metal ejected from the heater upon thereceivingtable at a point distant from the heater and within convenientreach of the operator of the rolling-mill, or roller, as he is known inthe art.

of construction, combination, and arrangement of parts, which will behereinafter more fully described, and particularly pointed out in theappended claims.

In the accompanying drawings, Figure 1 is an elevation taken from oneside of the heater. 1 Fig. 2 is a plan View. Fig. 3 is a longitudinal 1vertical sectional View on line so 00, Fig.2. Fig. 4: is a similar viewon line y y, Fig.2. Fig. 5 is a longitudinal horizontal sectional viewtaken above the bottom of the heatingchamber. Fig. 6 is a front end viewof the heater. Fig. 7 is a rear end view of the same. Fig. 8 is across-sectional view online no, Fig. 2. Fig. 9 is a similar view on lineu 10, Fig. 2. Fig. 10 is a detail perspective view of the transverseconveyer. Fig. 11 is a similar view of one of the longitudinalconveyors. Fig. 12 is a bottom plan view of the entire heater. Fig. 13is an enlarged sectional view through the heater, showing the ejector ina position opposite to that shown in Fig. 4. Fig.

and the exit with a discharge-table 19.

let is a top plan view of the ejector-slide, and Fig. 15 is an end viewof the same.

Referring to the drawings, 1 denotes the heater, consisting of the sidewalls 2 and 3, end walls 4, 5, and 6, top 7, and longitudinal partition8. The partition divides the interior of the heater into twolongitudinal heating-chambers A andB and terminates short of the rearend of the heater, thus forming a transverse heating-chamber at that'endof the heater, and thus establishing communication between thetwolongitudinal heating-chambers.

9 denotes the fire-chamber, which has an exit 10 communicating with thetransverse heating-chamber, so that the products of combustion will passthrough the transverse and longitudinal heating-chambers.

, 11 denotes an uptake or chimney, and 12 denotes a longitudinal pipecommunicating with said chimney and having branches l3 communicatingwith the forward ends of the longitudinal heating-chambers, so that theproducts of combustion from the fire-chamber are caused to pass thelength of the heating-chambers before they can escape from the heater.

With these and other objects in view the invention consists of certainnovel features The floors of the longitudinal heatingchamvbers are eachformed with longitudinal parallel grooves 14, and the floor of thetransverse heating-ehainber is provided with grooves 15, arranged atright angles to the grooves 14 and intersected thereby.

16 denotes the entrance to the chamber A, and 17 denotes the exit of thechamber B. The'entrance is provided with a feed-table 18 The table 18 isprovided with longitudinal grooves 20, which communicate with thegrooves in the floor of the chamber A. The entrance is provided with avertically-sliding door 21 and the exit with a similar door 22, theoperation of which will be hereinafter fully set forth.

23 and 2a denote the longitudinal conveyers for the heating chambersandB, and 25 denotes thetransverse conveyer for the transverse chamber.Each longitudinal'conveyer consists of a rectangular frame 26,preferably made of angle-iron and braced by diagonal bars 27 and theparallel members 28, which engage the grooves in the floors of thelongitndinal'heating-chambers and have a vertical movement above saidfloors in a manner hereinafter described, and preferably consist of asystem of communicating pipes, 29 denoting the inlet thereto, and 30denoting the outlet thereof. Through these pipes is adapted to flow coldwater to cool the pipes, especially those portions located within theheating-chambers, and prevent them from burning out.

The transverse conveyer consists of an angle-iron frame 31, rectangularin shape, and the transverse parallel members 32, suitably secured insaid frame and preferably consisting of a series of communicating pipes34, the inlet of which is indicated by the numeral 35 and the outlet ofwhich is indicated by the numeral 36. Through these pipes is adapted toflow cold water for the same purpose as it is used in the longitudinalconveyers above described. The parallel members of the transverseconveyer are adapted to lie in the grooves of the floor of thetransverse chamher and work vertically above the bottom of the floor fora purpose hereinafter described. The vertical members of the three setsof conveyers project through slots O in the floors of their respectivechambers.

Suitable mechanism, to be hereinafter described, is employed for movingthe longitudinal conveyer 23 from its position below the surface of thefloor vertically to lift the pack of sheet metal deposited upon thefloor of the chamber, thence rearwardly to move the pack of sheet metalrearwardly, thence downwardly to a position below the surface of thefloor to leave the pack of metal sheets upon the floor, and thencerearwardly in its grooves to its normal position.

Suitable mechanism, to be hereinafter described, is employed for movingthe conveyer 24 simultaneously with the movement of the conveyer 23, onemoving longitudinally in its elevated position while the other is movinglongitudinally in its depressed position. It will thus be seen thatwhile the conveyer 23 is carrying a pack of sheet metal to the rear ofthe machine the conveyer 24 is carrying a pack of sheet metal to theforward end of the machine.

Suitable mechanism, hereinafter to be described, is employed foroperating, in alternation with the longitudinal conveyers, thetransverse conveyer 25 to move the packs of sheet metal from the rearend of one longitudinal heating-chamber to that of the other. Thesevarious sets of mechanism are so constructed, arranged, and timed thatwhen the transverse conveyer is in its depressed position below thesurface of the floor of the transverse heating-chamber the rear ends ofthe longitudinal conveyers are moved over the ends of the transverseconveyer into the intersecting grooves in the floor of the transverseheating-chamber, the conveyer 23 depositing a pack of sheet metal ontothe floor of the transverse heating-chamber immediately above one end ofthe tranverse conveyer, while the conveyer 24 moves under apreviously-deposited pack of sheet metal on the opposite end of thefloor of the transverse chamber. Now in the forward movement of thelongitudinal conveyers one pack of sheet metal is elevated,moved,anddeposited on the floor of the transverse chamber by the conveyer 23,while the pack of metal sheets at the opposite end of the floor isengaged by the rear end of the conveyer 24,elevated, and moved forwardlyand laid upon the floor in the chamber B, to be again engaged by theconveyer, elevated, and moved forwardly in the next forward movement ofthe conveyor. At the instant the rear ends of the longitudinal conveyersare withdrawn from the intersecting grooves in the floor ofthetransverse chamber the transverse conveyer is elevated above thegrooves in the bottomof the transverse chamber, engages and lifts thepack of metal sheets just deposited upon that end of the floor by theconveyer 23, then moves the sheets transversely and deposits them uponthe opposite end of the floor of the transverse chamber in a position tobe again engaged by the conveyer 24.

We will now proceed to describe the mechanism for operating theconveyers 23 and 24.

37 and 38 denote longitudinal shafts journaled in bearings secured tothe sides of the heater. At the rear ends these shafts are provided withbeveled gears 39 and 40, which mesh with intermittent beveled gears 41and 42, respectively, said intermittent gears being fixed to asuitably-driven shaft 43, which we will term a drive-shaft.

The shaft 37 is provided with oppositelybeveled gear-Wheels 44 and 45,while the shaft 38 is provided with oppositely-beveled gearwheels 46 and47.

48 and 49 denote two transverse shafts which extend through the side ofthe heating-chamber A and are provided on their outer ends with beveledgears 50 and 51, which mesh, respectively, with beveled gears 44 and 45.

52 and 53 denote transverse shafts which extend through the oppositeside of the heater under the floor of the heating-chamber B and havefixed to their outer ends beveled gearwheels 54 and 55, which mesh,respectively, with the beveled gears 46 and 47.

Journaled to a shaft 56 under the floor of the chamber A are tworearwardly-projecting lifting-arms 57, the free ends of which arepreferably provided with antifriction-rollers 5S,which are adapted toengage the outer side of the rectangular angle-iron frame of theconveyer 23.

Fixed-to the inner end of the shaft 49 are two wiper-cams 59, which areadapted to engage the under sides of thelifting-arms 57 and elevate thesame in the rotation of the shaft 49, and fixed to the shaft 49 is aretractor 60 in the form of a hooked arm, which is adapted to engage alug 61, projecting downwardly from the frame of the conveyer 23, andmove said conveyer rearwardly in its depressed position, as hereinafterdescribed.

62 denotes lifting-arms pivoted on a shaft 63, secured under the chamberA in advance of the shaft 56, and provided at their rear ends withrollers 64., which are adapted to engage the rear end of the rectangularframe of the conveyer 23 and elevate it when engaged by the wiper-cams65, fixed to the shaft 18. This shaft 48 has secured to it a hooked arm66, which we will term, in contradistinction to the retractor and forconvenience of reference, the advancer, for asthe arm serves to retractthe conveyer the arm 66 advances the conveyer toward the rear end tocarry the packs of metal sheets from one end of the heatingchamber tothe other. This advancer engages a stud 67, projecting downwardly fromthe under side of the forward end of the main frame of the conveyer 23,and after said conveyer has been elevated by the two sets of wiper-camsand the lifting-arms with which they coact said advancer engages thestud 67, and while the conveyer is in its elevated position moves itrearwardly. At the instant the advancer disengages the stud 67 the twosets of cams move from engagement with the lifting-arms, which lower andengage with their free ends stop-brackets 68. At this point theretractor 60 engages the stud 61 and moves the conveyer forwardly.

The mechanism for operating the conveyer 2 1 is precisely the same asthat shown and described for operating the conveyor 23, the wiper-cams,advancers, and retractors, however, being so set with relation to thecorresponding parts for the conveyer 23 that the conveyer 2 1 in movingforwardly is in its elevated position, while the conveyer 23 in movingin unison with the conveyer 24 is in its depressed position, aspreviously described, and for this reason it is not believed that adetailed explanation of the parts will be required.

The mechanism for actuating the transverse conveyer comprises thelongitudinal short shafts 69 and 70, which are suitably journaled underthe floor of the transverse heating-chamber and have fixed to their rearends beveled pinions 71 and 72, which mesh oppositely-facing beveledpinions 73 and 74, respectively, fixed to the ends of the shaft 75,jonrnaled in suitable bearings at the rear end of the heater. This shaft75 is provided with a gear-wheel 7 6, which meshes with an intermittentgear 77, fixed to the shaft 43, the arrangement being such that theblank or toothless portion of said gear 77 is opposite the gear 76,while the toothed portions of the gears 41 and 42 are in engagement withthe gears 39 and 410. In other words, while the shafts 37 and 38 are inmotion the shaft 75 will be at a state of rest.

78 and 79 denote short shafts secured on the ends of the transverseheating-chamber, and 80 and 31 denote lifting-arms journalcd upon saidshafts and provided with rollers 82 and 83, which engage therectangularframe of-the transverse conveyer and elevate the same whenthe arms are engaged by their respective wiper-cams 84: and 85. Afterthe conveyer has been lifted by the wiper-cams the advancer 87, fixed tothe shaft 69, engages the lug 88, projecting downwardly from one end ofthe conveyer, and while in its elevated position the conve e'r is movedin a direction from the chamber to the chamber B tocarry the packs ofmetal sheets from the former to the latter chamber. The adv-ancer 87 nowdisengages the conveyor, as do also the wipercams, allowing the conveyerto lower and engage the stops89. At this instant the retractor 86engages the lug 90, projecting downwardly from the end of the conveyor,and while the conveyer is below the bottom of the transverse chamberretracts it and moves it to a position to receive a fresh pack of metalSheets from the conveyer 23, moving in the chamber A.

The doors 21 and 22 are operated automatically in the following manner:To posts 91 and 92, projecting upwardly from the sides of the heaternear its forward end, are pivoted levers 93 and 94, the inner ends ofwhich are connected by chains 95 and 96 to the doors. 97 and 98 denotelevers pivoted to the sides of the "furnace and connected with the upperlevers by chains 99 and 100. These levers 97 and 98 are depressed bycams 101 and 102, fixed to the shafts 37 and 38, and at the proper timecause the doors to open. The doors being weighted will by gravity closewhen the lowermost set of levers is actuated by their coacting cams, soas to prevent an unnecessary amount of heat from escaping from theheater.

The ejector consists of the reciprocatory slide 103, which works in anopening 10 1, formed in the discharge-table and of proper size toaccommodate the ejector. The slide has a parallel row of longitudinalgrooves 105, which correspond in number and register with the grooves inthe fioor of the heating-chamber B. The base or bottom 106 of the slideis provided with two slots 107, which are adapted to be engaged by thedownwardlyextending hooked forward ends of the conveyer 24 in itsrearward movement to move the rear end of the ejector into engagementwith the forward end of the floor of the chamber B to a point withinsaid chamber. To hold the ejector when it has been moved rearwardly withits rear end projecting within .the chamber B, we provide a pin 108,which projects through the bottom of the table and has its upper endextending within the path of movement of the forward end of the tableand is held in this position by a spring 109. A spring 1 10,fixed to theforward end of the table and to the forward end of the ejector, servesto withdraw the ejector when released by the pin. A trip 111 is pivotedto a suitably-located post 112 and has its end 113 projecting within thepath of movement of the base-frame of the conveyer 24:. The end 114 ofsaid trip is adapted to engage a weighted lever 115, pivoted to theunder side of the floor of the chamber B, and this lever 115 has itspivoted end provided with an aperture 116, through which projects thelower end of the pin 108 into engagement with the spring 109.

In operation as the conveyer 24 moves rear- Wardly in its depressedposition its hooked forward end engages the rear Walls of the slots ofthe ejector and moves said ejector rearwardly under the door 22, whichis in its lowermost or closed position. WVhen the ejector has been movedrearwardl y the limit of its movement, the spring-actuated pin 108 isforced upwardly within the path of movement of the forward end of theejector, and this looks said ejector against movement. The conveyor 24after having reached its rearmost point of movement elevates and beginsto move forward, and at this instant the door 22 is lifted to permit theforward end of the conveyer depositing a pack of metal sheets upon theejector. At the instant the pack of metal sheets is deposited upon theejector the forward end of the base-frame of the conveyer 24 strikes therear end 113 of the trip 111, lifts the end 114: of said trip, which,contacting with the weighted end of the lever 115, lowers its end 116and permits the pin 108 to drop, and thus frees the ejector, which issuddenly thrown forwardly by the action of the spring 110, and thusprojects the pack forwardly within convenient reach of the roller.

From the foregoing description, taken in connection with theaccompanying drawings, the construction, mode of operation, andadvantages of the invention will be readily understood without requiringa more extended explanation.

Various changes in the form, proportion, and details of construction maybe made within the scope of the invention as claimed without departingfrom the spirit or sacrificing any of the advantages thereof.

Having thus described our invention, what we claim, and desire to secureby Letters Patent, is-

1. In a heater of the character described, the combination of theheating-chambers arranged side by side, a transverse heatingchamberestablishing communication between said firstnamed heating-chambers,conveyers for conveying the material to be heated through the severalheating-chambers, and actuating means common to all the conveyers foroperating them, substantially a set forth.

2. In a heater of .the character described, the combination of theheating-chambers arranged side by side, one having an entrance and theother an exit at their forward ends, a transverse heating-chamberestablishing communication between the rear ends of the first-namedheating-chambers, conveyers for conveying the material to be heatedthrough the several heating-chambers, and actuating means common to allthe conveyers for operating them, substantially as set forth.

3. In a heater of the character described, the combination of theheating-chambers arranged side by side, the transverse heatingchamberestablishing communication between said first-named heatingchambers,conveyers for the respective heating-chambers, means for actuating theconveyers in the first-named chambers in unison to pro ject their rearends into and withdraw them from the transverse chamber, and means foroperating the transverse conveyer to reciprocate the same in alternationwith the longitudinal conveyers, substantially as set forth.

4. In a heater of the character described, the combination with thelongitudinal chambers, of a transverse chamber establishingcommunication between the rear ends of the longitudinal chambers, saidchambers being provided with grooved floors and the grooves of thetransverse chamber being intersected by those of the longitudinalchambers, conveyers for said chambers, means for raising the conveyersin the longitudinal chambers across the grooves of the transversechamber, and means for moving the transverse conveyer in alternationwith the longitudinal conveyers, substantially as set forth.

5. In a heater of the character described, the combination with aheating-chamber having an exit, and a door for closing the exit, of areciprocatory ejector, a conveyer for moving the heated material uponsaid ejector, means for opening the door, and simultane ously operatingthe ejector to thrust it forwardly, substantially as set forth.

6. In a heater of the character described, the combination of theheating-chamber provided with an exit, a door for closing the exit, aconveyer having a movement through the exit, an ejector adapted to beengaged by the conveyer and moved rearwardly under the edge of the door,means for elevating said door, and means for returning said ejector toits normal position, substantially as set forth.

7. In a heater of the character described, the combination with thelongitudinal heating-chambers and the transverse heatingchamberestablishing communication between the longitudinal chambers at the rearends thereof, of conveyers located within said chambers, the forwardends of said longitudinal chambers being provided one with an entranceand the other an exit and doors for closing the entrance and exit, andmeans for opening and closing the entrance and exit doors for theentrance into one of the longitudinal heating-chambers, of material tobe heated, and the removal from the other longitudinal heating-chamber,of the properlyheated material, substantially as set forth.

8. In a heater of the character described, the combination with thelongitudinal heating-chambers and the transverse heatingchamberestablishing communication beeeassa 5 tween the rear ends of thelongitudinal chaming the transverse conveyer in alternation bers, saidchambers having slotsin their floors with the reciprocatory movement ofthe ionof conveyers projecting upwardly through gitudinalconveyers,suhstantially as set forth. the slots in the floors of theseveral chambers, In testimony whereof we have hereunto set I 5 cams forelevating the eonveyers of the 1011- our hands in presence of twosubscribing witgitudinal chambers in alternation, advancers nesses.

and retractors for reciprocating thelongitndi- JOHN E. JONES. nalconveyers in unison, one in its depressed BENJAMIN JONES. position andthe other in its elevated position, Witnesses:

JAMES J. DAVIS, HYTON JONES.

cams for elevating the transverse conveyer, and advancers and retractorsfor reciprocat-

